mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-28 05:06:08 +00:00
201 lines
7.6 KiB
Python
201 lines
7.6 KiB
Python
#!/usr/bin/env python
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import sys, lz4, hashlib, os
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from struct import unpack as up, pack as pk
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def lz4_compress(data):
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try:
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import lz4.block as block
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except ImportError:
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block = lz4.LZ4_compress
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return block.compress(data, 'high_compression', store_size=False)
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def read_file(fn):
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with open(fn, 'rb') as f:
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return f.read()
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def pad(data, size):
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assert len(data) <= size
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return (data + b'\x00' * size)[:size]
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def get_overlay(program, i):
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return program[0x2B000 + 0x14000 * i:0x2B000 + 0x14000 * (i+1)]
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KIP_NAMES = [b'Loader', b'NCM', b'ProcessManager', b'sm', b'boot', b'spl', b'ams_mitm']
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def get_kips(ams_dir):
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emummc = read_file(os.path.join(ams_dir, 'emummc/emummc_unpacked.kip'))
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loader = read_file(os.path.join(ams_dir, 'stratosphere/loader/loader.kip'))
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ncm = read_file(os.path.join(ams_dir, 'stratosphere/ncm/ncm.kip'))
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pm = read_file(os.path.join(ams_dir, 'stratosphere/pm/pm.kip'))
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sm = read_file(os.path.join(ams_dir, 'stratosphere/sm/sm.kip'))
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boot = read_file(os.path.join(ams_dir, 'stratosphere/boot/boot.kip'))
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spl = read_file(os.path.join(ams_dir, 'stratosphere/spl/spl.kip'))
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ams_mitm = read_file(os.path.join(ams_dir, 'stratosphere/ams_mitm/ams_mitm.kip'))
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return (emummc, {
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b'Loader' : loader,
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b'NCM' : ncm,
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b'ProcessManager' : pm,
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b'sm' : sm,
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b'boot' : boot,
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b'spl' : spl,
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b'ams_mitm' : ams_mitm,
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})
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def write_kip_meta(f, kip, ofs):
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# Write program id
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f.write(kip[0x10:0x18])
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# Write offset, size
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f.write(pk('<II', ofs - 0x100000, len(kip)))
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# Write hash
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f.write(hashlib.sha256(kip).digest())
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def write_header(f, all_kips, wb_size, tk_size, xf_size, ex_size, ms_size, fs_size, rb_size, git_revision, major, minor, micro, relstep, s_major, s_minor, s_micro, s_relstep):
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# Unpack kips
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emummc, kips = all_kips
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# Write magic as PK31 magic.
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f.write(b'PK31')
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# Write metadata offset = 0x10
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f.write(pk('<I', 0x20))
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# Write flags
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f.write(pk('<I', 0x00000000))
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# Write meso_size
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f.write(pk('<I', ms_size))
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# Write num_kips
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f.write(pk('<I', len(KIP_NAMES)))
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# Write reserved1
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f.write(b'\xCC' * 0xC)
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# Write legacy magic
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f.write(b'FSS0')
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# Write total size
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f.write(pk('<I', 0x800000))
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# Write reserved2
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f.write(pk('<I', 0xCCCCCCCC))
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# Write content_header_offset
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f.write(pk('<I', 0x40))
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# Write num_content_headers;
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f.write(pk('<I', 8 + len(KIP_NAMES)))
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# Write supported_hos_version;
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f.write(pk('<BBBB', s_relstep, s_micro, s_minor, s_major))
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# Write release_version;
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f.write(pk('<BBBB', relstep, micro, minor, major))
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# Write git_revision;
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f.write(pk('<I', git_revision))
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# Write content metas
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f.write(pk('<IIBBBBI16s', 0x000800, wb_size, 2, 0, 0, 0, 0xCCCCCCCC, b'warmboot'))
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f.write(pk('<IIBBBBI16s', 0x002000, tk_size, 12, 0, 0, 0, 0xCCCCCCCC, b'tsec_keygen'))
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f.write(pk('<IIBBBBI16s', 0x004000, xf_size, 11, 0, 0, 0, 0xCCCCCCCC, b'exosphere_fatal'))
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f.write(pk('<IIBBBBI16s', 0x048000, ex_size, 1, 0, 0, 0, 0xCCCCCCCC, b'exosphere'))
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f.write(pk('<IIBBBBI16s', 0x056000, ms_size, 10, 0, 0, 0, 0xCCCCCCCC, b'mesosphere'))
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f.write(pk('<IIBBBBI16s', 0x7C0000, fs_size, 0, 0, 0, 0, 0xCCCCCCCC, b'fusee'))
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f.write(pk('<IIBBBBI16s', 0x7E0000, rb_size, 3, 0, 0, 0, 0xCCCCCCCC, b'rebootstub'))
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f.write(pk('<IIBBBBI16s', 0x100000, len(emummc), 8, 0, 0, 0, 0xCCCCCCCC, b'emummc'))
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ofs = (0x100000 + len(emummc) + 0xF) & ~0xF
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for kip_name in KIP_NAMES:
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kip_data = kips[kip_name]
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f.write(pk('<IIBBBBI16s', ofs, len(kip_data), 6, 0, 0, 0, 0xCCCCCCCC, kip_name))
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ofs += len(kip_data)
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ofs += 0xF
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ofs &= ~0xF
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# Pad to kip metas.
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f.write(b'\xCC' * (0x400 - 0x40 - (0x20 * (8 + len(KIP_NAMES)))))
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# Write emummc_meta. */
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write_kip_meta(f, emummc, 0x100000)
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# Write kip metas
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ofs = (0x100000 + len(emummc) + 0xF) & ~0xF
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for kip_name in KIP_NAMES:
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kip_data = kips[kip_name]
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write_kip_meta(f, kip_data, ofs)
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ofs += len(kip_data)
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ofs += 0xF
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ofs &= ~0xF
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# Pad to end of header
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f.write(b'\xCC' * (0x800 - (0x400 + (1 + len(KIP_NAMES)) * 0x30)))
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def write_kips(f, all_kips):
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# Unpack kips
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emummc, kips = all_kips
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# Write emummc
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f.write(emummc)
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# Write kips
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tot = len(emummc)
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if (tot & 0xF):
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f.write(b'\xCC' * (0x10 - (tot & 0xF)))
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tot += 0xF
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tot &= ~0xF
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for kip_name in KIP_NAMES:
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kip_data = kips[kip_name]
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f.write(kip_data)
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tot += len(kip_data)
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if (tot & 0xF):
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f.write(b'\xCC' * (0x10 - (tot & 0xF)))
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tot += 0xF
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tot &= ~0xF
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# Pad to 3 MB
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f.write(b'\xCC' * (0x300000 - tot))
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def main(argc, argv):
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if argc != 12:
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print('Usage: %s ams_dir target revision major minor micro relstep s_major s_minor s_micro s_relstep' % argv[0])
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return 1
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# Parse arguments
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ams_dir = argv[1]
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target = '' if argv[2] == 'release' else ('_%s' % argv[2])
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revision = int(argv[3][:8], 16)
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major = int(argv[4])
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minor = int(argv[5])
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micro = int(argv[6])
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relstep = int(argv[7])
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s_major = int(argv[8])
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s_minor = int(argv[9])
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s_micro = int(argv[10])
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s_relstep = int(argv[11])
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# Read/parse fusee
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fusee_program = read_file(os.path.join(ams_dir, 'fusee/program/program%s.bin' % target))
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fusee_bin = read_file(os.path.join(ams_dir, 'fusee/fusee%s.bin' % target))
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erista_mtc = get_overlay(fusee_program, 1)
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mariko_mtc = get_overlay(fusee_program, 2)
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erista_hsh = hashlib.sha256(erista_mtc[:-4]).digest()[:4]
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mariko_hsh = hashlib.sha256(mariko_mtc[:-4]).digest()[:4]
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# Read other files
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exosphere = read_file(os.path.join(ams_dir, 'exosphere/exosphere%s.bin' % target))
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warmboot = read_file(os.path.join(ams_dir, 'exosphere/warmboot%s.bin' % target))
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mariko_fatal = read_file(os.path.join(ams_dir, 'exosphere/mariko_fatal%s.bin' % target))
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rebootstub = read_file(os.path.join(ams_dir, 'exosphere/program/rebootstub/rebootstub%s.bin' % target))
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mesosphere = read_file(os.path.join(ams_dir, 'mesosphere/mesosphere%s.bin' % target))
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all_kips = get_kips(ams_dir)
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tsec_keygen = read_file(os.path.join(ams_dir, 'fusee/program/tsec_keygen/tsec_keygen.bin'))
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splash_bin = read_file(os.path.join(ams_dir, 'img/splash.bin'))
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assert len(splash_bin) == 0x3C0000
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with open(os.path.join(ams_dir, 'fusee/package3%s' % target), 'wb') as f:
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# Write header
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write_header(f, all_kips, len(warmboot), len(tsec_keygen), len(mariko_fatal), len(exosphere), len(mesosphere), len(fusee_bin), len(rebootstub), revision, major, minor, micro, relstep, s_major, s_minor, s_micro, s_relstep)
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# Write warmboot
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f.write(pad(warmboot, 0x1800))
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# Write TSEC Keygen
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f.write(pad(tsec_keygen, 0x2000))
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# Write Mariko Fatal
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f.write(pad(mariko_fatal, 0x1C000))
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# Write Erista MTC
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f.write(erista_mtc[:-4] + erista_hsh)
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# Write Mariko MTC
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f.write(mariko_mtc[:-4] + mariko_hsh)
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# Write exosphere
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f.write(pad(exosphere, 0xE000))
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# Write mesosphere
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f.write(pad(mesosphere, 0xAA000))
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# Write kips
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write_kips(f, all_kips)
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# Write Splash Screen
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f.write(splash_bin)
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# Write fusee
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f.write(pad(fusee_bin, 0x20000))
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# Write rebootstub
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f.write(pad(rebootstub, 0x1000))
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# Pad to 8 MB
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f.write(b'\xCC' * (0x800000 - 0x7E1000))
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return 0
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if __name__ == '__main__':
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sys.exit(main(len(sys.argv), sys.argv))
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